[ALUG] LVM documentation and/or basic help wanted
cl at isbd.net
Fri Oct 12 09:50:50 BST 2007
On Thu, Oct 11, 2007 at 10:11:32PM +0100, Wayne Stallwood wrote:
> On Thu, 2007-10-11 at 14:57 +0100, Chris G wrote:
> > I need something that tells me good strategies for splitting ones
> > disks, e.g. :-
> > Is it best to keep two large[ish] SATA disks as two Volume Groups
> > or would they be better as one?
> > What's a reasonable strategy for spltting into logical volumes?
> Multiple physical devices in a single volume group scare me unless
> either the physical devices are in themselves fault tolerant or I really
> don't care about the data I am going to put in the resulting partitions.
> Failure of a single device will result in all the partitions within the
> group probably being irrecoverably unmountable. So when a volume group
> comprises of two devices you have doubled the chances of disk failure
> wiping out your data.
> That said if you require logical volumes larger than your biggest disk
> then it is your only choice.
OK, that's on thing to bear in mind then. Since my disks are 300Gb
each I can see no great disadvantage in setting them up as two
separate volume groups.
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